In the Star Trek future, they have pretty much evolved past the usage of money. That really sucks too because this cool faux-leather wallet features the symbol of Starfleet and by extension, the Federation!
Boasting your holder of currency and credit cards, the Star Trek Starfleet Bifold Wallet isn't used in the future because humanity generally works together and takes care of everybody and money is just kind of...useless. What a concept!